111542 has 8 divisors (see below), whose sum is σ = 171336. Its totient is φ = 54432.

The previous prime is 111539. The next prime is 111577. The reversal of 111542 is 245111.

111542 is nontrivially palindromic in base 6.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 111542.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563 + ... + 734.

It is an arithmetic number, because the mean of its divisors is an integer number (21417).

2¹¹¹⁵⁴² is an apocalyptic number.

111542 is a deficient number, since it is larger than the sum of its proper divisors (59794).

111542 is a wasteful number, since it uses less digits than its factorization.

111542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342.

The product of its digits is 40, while the sum is 14.

The square root of 111542 is about 333.9790412586. The cubic root of 111542 is about 48.1370504483.

Adding to 111542 its sum of digits (14), we get a square (111556 = 334²).

Adding to 111542 its reverse (245111), we get a palindrome (356653).

The spelling of 111542 in words is "one hundred eleven thousand, five hundred forty-two".